Finding the Third Proportional to 9,186,126 and 21,456,119

Step by Step Solution

1. Step 1: Write the proportion equation
   9,186,126 : 21,456,119 = 21,456,119 : x
2. Step 2: Convert to fraction form
   9,186,126/21,456,119 = 21,456,119/x
3. Step 3: Cross multiply
   9,186,126x = 21,456,119 × 21,456,119
4. Step 4: Simplify right side
   9,186,126x = 460,365,042,542,161
5. Step 5: Solve for x
   x = 460,365,042,542,161/9,186,126
6. Step 6: Final answer
   x = 50,115,254.52